I boil. I use two pans and fill them up about 3/4 way. On high heat takes like 10min to boil(putting a lid on helps). Then I toss one tire in each and let them sit for 15min on each side then flip. You can hold them down with something that will weigh more then the tires. That will speed up the time. But either way,just watch the water level because it will go down(duh)

Depending on how much glue was used,sometimes they do 'pop' right off. And there has been times where I had to put that side back in for another 5 minutes to finish the job. It does cool off fast,but watch the foams on the inside so you dont get burned as you pull the tire off.

Just clean the bead and rim and your set. All that is left over is some dirty water. The pan will have some dirt rings on it also.